Snubbing clamp for cables



1944- M. RUGGIERI SNUBBING CLAMP FOR CABLES Filed Nov. 6, 1941 ATTOENE).

Patented Jan. 11, 1944 U'NITED STATES PATENT OFFICE SNUBBING CLAMP FORCABLES Michael Ruggieri, Stroudsburg, Pa., 'ass ig nor to Line Material Company, .South Milwaukee, Wis acorporation of Delaware Application Novemberfi, 1941, SeriaLNo, 418,061

This: invention relates to a snubbing clamp for cables.

Objects of this invention are to provide a snubbing clamp for locking the end ofa cable or other flexible member-which is so arranged that a plurality of snubbing lugs are provided and are equipped with oppositely directed grooved snubbing clamp, the major portion of the pull of' the cable, v however, being frictionally borne by the successive snubbing lugs and only a small fraction of the pull of: the cable being directly borne by the clamping keeper.-

Further objects are to provide a construction of snubbing clamp for cables in which an elongated body portion is provided with the snubbing lugs and the clamping keeper all located on one side thereof with the inner end of the snubbing clamp pivotally attached to a suitable support, preferably by means of a pivot pin, the pivot pin passing through a pair of cars on the body portion and through an eyelet member on the support, with the elongated body portion offset laterally with respect to a plane at right angles to the pivot pin and centrally between the ears of the body portion so that the axis of the cable lies in such plane and thereby does not produce any twisting or bending action at the point of attachment of the snubbing clamp to the support.

In attaching cables to clamps it is the usual practice to use a cable tightening means such as a block and tackle arrangement, which is commonly called a come along, and to draw the cable taut with this cable tightening means prior to permanently securing the free end of the cable. It frequently happens that this cable tightening means has to be attached to a pole or other member at a point spaced from the final point of attachment of the cable. The result of this is that the cable, when tightened by the cable tightening means, is not in alignment with the final point at which it is to be attached.

This invention is designed to overcome the above noted defect, and a further object of the invention is to provide a snubbing clamp which is 'so arranged that means are provided for the dir'ect attachment of the outer end of the snubbing clamp. to the: cable tightening means so that when thecable is pulled tight by the cable tightening means prior to its attachment to the snubbing-clamp, the cable will lie in approximate alignment with thesnubbing clamp itself.

Furtherobjects are to provide a construction which is adapted to receive cables of different sizes, the grooves of the snubbing lugs on the body portion of the snubbing clamp being tapered so as to cause wedging for cables of different sizes and the clamping keeper being made reversible so as to clamp cablesof different sizes.

An embodiment of the invention is shown in the acompanying drawing, in which:

Figure 1 is a view showing the snubbing clamp in position and attached to a cable.

Figure 2 is a plan view of the structure shownin Figure 1.

Figure 3 isa sectional View on the line 33 of Figure 1'.

Figure 4 is a sectional view on the line 4-4 of Figure 1;

Figure- 5' is a sectional View on the line 55 of' Figure 1.

Referring to the drawing, it will be seen that the snubbing clamp comprises an elongated, relatively flat body portion I which may be sinuous in shape as shown particularly in Figure 1. A plurality of snubbing lugs indicated at 2, 3 and 4 are provided and are spaced longitudinally of the body portion and are oppositely directed. These spaced snubbing lugs are preferably arranged at the outermost bulged portions of the sinuous elongated body portion so as to space the lugs laterally to cause the cable indicated at 5, when looped around the snubbing lugs, to engage or embrace a substantial portion of each of the snubbing lugs to thereby increase the frictional engagement between the cable and the snubbing lugs. It is to be noted from Figures 3 and 4 that the snubbing lugs are provided with V-shaped or tapered grooves 6 so as to receive cables of different sizes.

The inner end of the snubbing lug is provided with a downwardly extending portion which has a small outwardly extending rib 1. This is shown most clearly in Figure 5. Preferably the rib 1 extends vertically as shown and paralleling this rib a groove 8 is provided in the body portion to receive the inner end of the cable after it has passed over the innermost snubbing lug 2. A clamping keeper or plate 9 is provided with a pair of grooves indicated at H3 and II on opposite sides thereof. The groove ll may be relatively small and the groove 10 may be of larger size. One of the grooves in the keeper 9 is adapted to receive the cable and the other groove is adapted to fit over the rib I. The plate or clamping keeper 9 is adapted to be reversed so as to clamp cables of difierent sizes. It is drawn into clamping engagement with the cable by means of a bolt l2, the bolt bein preferably provided with a rectangular portion l3 seated in a correspondingly shaped opening in the body portion l to prevent turning of the bolt when the nut I4 is tightened.

It is to be noted that the clamping keeper 9 and the lugs 2, 3 and 4 are all located on the same side of the elongated body portion I. The inner end of the body portion 1 is provided with a pair of ears l5 which are spaced apart and which are adapted to receive between them the eye portion it of an eyebolt H. A pintle pin l8 pivotally joins the eye 16 of the eyebolt I! to the lugs I5, a suitable split pin l9 being passed through the pintle pin and looking it in place. The eyebolt I! usually extends through a pole or other suitable support and is provided in the usual manner with the nut at its rear end, such construction being not shown in the drawing as it is a well known and common construction.

It is to be noted particularly with reference to'Figure 2 that the elongated body portion I is offset laterallywith respect to a central plane passing centrally between the ears [5 and at right angles to the pintle pin I8; By means of this construction the center line of the grooves of the successive snubbing lugs lies in this central plane and consequently the axis of the cable also lies in this central plane and there is no tendency to bend or twist'the attaching means securing the snubbing clamp to th support.

A further feature to be noted is that the snubbing clamp is provided with an eyelet portion 20 at its outer free end to which the cable tightening means, commonly called a come along, is adapted to be initially attached while the cable is being tightened. Usually this cable tightening means consists of a small block and tackle arrangement and when the cable tightening means is tightened up, the tightened cable lies in approximate alignment with the snubbing clamp. It is attached to the snubbing clamp as described hereinabove while it is in its tightened condition. In View of the fact that the cable is substantially in alignment with the snubbing clamp when it is initially tightened, there will be practically no slackening up of the cable when the cable tightening means is removed and when the cable is, therefore, held solely by the snubbing clamp.

If desired, the lower portion ofthe body portion I adjacent the clamping keeper 9 may be slightly curved, as shown in Figure 4, and the clamping keeper also may be slightly curved to secure a better clamping grip on the cable 5.

The expression cable wherever used is intended to cover either a stranded or unstranded cable or any other member serving this general such description is intended as illustrative ratherthan limiting, as the invention may be variously embodied and is to be interpreted as claimed.

I claim:

A snubbing clamp comprising attaching means adapted for attachment to a suitable support, an elongated body portion movably carried by said attaching means, said body portion having a plurality of reversely directed, spaced, snubbing lugs about which a cable is adapted to be looped and having clamping means adjacent the inner end of the body portion for clamping the cable to the snubbing clamp, said bodyportion having an eyelet at its outer free end adapted to initially receive cable tightening means, said eyelet and the outermost snubbing lug being located in close proximity to each other. A

MICHAEL RUGGIERI. 

